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Use xbt_malloc (and friends) instead of direct malloc()
[simgrid.git] / src / surf / network_gtnets.c
index b73385b..8207982 100644 (file)
@@ -1,6 +1,5 @@
-/*     $Id$     */
-
-/* Copyright (c) 2005 Henri Casanova. All rights reserved.                  */
+/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 #include "network_gtnets_private.h"
 #include "gtnets/gtnets_interface.h"
 #include "xbt/str.h"
-
+#include "surf/surfxml_parse_values.h"
 
 static double time_to_next_flow_completion = -1;
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
-                                "Logging specific to the SURF network module");
-
-/** QUESTIONS for GTNetS integration
- **   1. Check that we did the right thing with name_service and get_resource_name
- **   2. Right now there is no "kill flow" in our GTNetS implementation. Do we
- **      need to do something about this?
- **   3. We ignore the fact there is some max_duration on flows (see #2 above)
- **   4. share_resources() returns a duration, not a date, right?
- **   5. We don't suppoer "rates"
- **   6. We don't update "remaining" for ongoing flows. Is it bad?
- **/
-
-static int src_id = -1;
-static int dst_id = -1;
-
-/* Free memory for a network link */
-static void link_free(void *nw_link)
-{
-  free(((network_link_GTNETS_t) nw_link)->name);
-  xbt_dict_free(&(((network_link_GTNETS_t) nw_link)->properties));
-  free(nw_link);
-}
+                                "Logging specific to the SURF network GTNetS module");
 
-/* Instantiate a new network link */
-/* name: some name for the link, from the XML */
-/* bw: The bandwidth value            */
-/* lat: The latency value             */
-static void link_new(char *name, double bw, double lat, xbt_dict_t props)
+extern routing_platf_t routing_platf;
+
+double sg_gtnets_jitter = 0.0;
+int sg_gtnets_jitter_seed = 10;
+
+static void link_new(const char *name, double bw, double lat, xbt_dict_t props)
 {
   static int link_count = -1;
   network_link_GTNETS_t gtnets_link;
 
-  /* If link already exists, nothing to do (FIXME: check that multiple definition match?) */
-  if (xbt_dict_get_or_null(link_set, name)) {
+  if (xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL)) {
     return;
   }
 
-  /* KF: Increment the link counter for GTNetS */
-  link_count++;
+  XBT_DEBUG("Scanning link name %s", name);
 
-/*
-  nw_link->model =  surf_network_model;
-  nw_link->name = name;
-  nw_link->bw_current = bw_initial;
-  if (bw_trace)
-    nw_link->bw_event =
-       tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
-  nw_link->lat_current = lat_initial;
-  if (lat_trace)
-    nw_link->lat_event =
-       tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
-  nw_link->state_current = state_initial;
-  if (state_trace)
-    nw_link->state_event =
-       tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
-*/
-
-  /* KF: Add the link to the GTNetS simulation */
-  if (gtnets_add_link(link_count, bw, lat)) {
-    xbt_assert0(0, "Cannot create GTNetS link");
-  }
 
-  /* KF: Insert entry in the dictionary */
   gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
-  gtnets_link->name = name;
+  gtnets_link->generic_resource.name = xbt_strdup(name);
+  gtnets_link->generic_resource.properties = props;
   gtnets_link->bw_current = bw;
   gtnets_link->lat_current = lat;
-  gtnets_link->id = link_count;
-  /* Add the properties */
-  gtnets_link->properties = props;
 
-  xbt_dict_set(link_set, name, gtnets_link, link_free);
+  link_count++;
 
-  return;
-}
+  XBT_DEBUG("Adding new link, linkid %d, name %s, latency %g, bandwidth %g",
+           link_count, name, lat, bw);
 
-/* free the network card */
-static void network_card_free(void *nw_card)
-{
-  free(((network_card_GTNETS_t) nw_card)->name);
-  free(nw_card);
-}
-
-/* Instantiate a new network card: MODIFYED BY KF */
-static int network_card_new(const char *name)
-{
-  static int card_count = -1;
-
-  XBT_IN1("(%s)", name);
-  /* KF: Check that we haven't seen the network card before */
-  network_card_GTNETS_t card =
-    surf_model_resource_by_name(surf_network_model, name);
-
-  if (!card) {
-    /* KF: Increment the card counter for GTNetS */
-    card_count++;
-
-    /* KF: just use the dictionary to map link names to link indices */
-    card = xbt_new0(s_network_card_GTNETS_t, 1);
-    card->name = xbt_strdup(name);
-    card->id = card_count;
-    xbt_dict_set(surf_model_resource_set(surf_network_model), name, card,
-                 network_card_free);
+  if (gtnets_add_link(link_count, bw, lat)) {
+    xbt_die("Cannot create GTNetS link");
   }
+  gtnets_link->id = link_count;
 
-  LOG1(xbt_log_priority_trace, "   return %d", card->id);
-  XBT_OUT;
-  /* KF: just return the GTNetS ID as the SURF ID */
-  return card->id;
+  xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, gtnets_link);
 }
 
-/* Instantiate a new route: MODIFY BY KF */
-static void route_new(int src_id, int dst_id, network_link_GTNETS_t * links,
+static void route_new(int src_id, int dst_id, xbt_dynar_t links,
                       int nb_link)
 {
-  int i;
+  network_link_GTNETS_t link;
+  unsigned int cursor;
+  int i = 0;
   int *gtnets_links;
-  XBT_IN4("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
+
+  XBT_IN("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
           src_id, dst_id, links, nb_link);
 
-  /* KF: Build the list of gtnets link IDs */
-  gtnets_links = (int *) calloc(nb_link, sizeof(int));
-  for (i = 0; i < nb_link; i++) {
-    gtnets_links[i] = links[i]->id;
+  /* Build the list of gtnets link IDs */
+  gtnets_links = xbt_new0(int, nb_link);
+  i = 0;
+  xbt_dynar_foreach(links, cursor, link) {
+    gtnets_links[i++] = link->id;
   }
 
-  /* KF: Create the GTNets route */
   if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
-    xbt_assert0(0, "Cannot create GTNetS route");
+    xbt_die("Cannot create GTNetS route");
   }
-  XBT_OUT;
+  XBT_OUT();
 }
 
-/* Instantiate a new route: MODIFY BY KF */
 static void route_onehop_new(int src_id, int dst_id,
-                             network_link_GTNETS_t * links, int nb_link)
+                             network_link_GTNETS_t link)
 {
-  int linkid;
-
-  if (nb_link != 1) {
-    xbt_assert0(0, "In onehop_new, nb_link should be 1");
-  }
-
-  /* KF: Build the linbst of gtnets link IDs */
-  linkid = links[0]->id;
-
-  /* KF: Create the GTNets route */
-  if (gtnets_add_onehop_route(src_id, dst_id, linkid)) {
-    xbt_assert0(0, "Cannot create GTNetS route");
+  if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
+    xbt_die("Cannot create GTNetS route");
   }
 }
 
-
-
 /* Parse the XML for a network link */
-static void parse_link_init(void)
+static void parse_link_init(sg_platf_link_cbarg_t link)
 {
-  char *name;
-  double bw;
-  double lat;
-  e_surf_link_state_t state;
-
-  name = xbt_strdup(A_surfxml_link_id);
-  surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
-  surf_parse_get_double(&lat, A_surfxml_link_latency);
-  state = SURF_LINK_ON;
-
-  tmgr_trace_t bw_trace;
-  tmgr_trace_t state_trace;
-  tmgr_trace_t lat_trace;
-
-  surf_parse_get_trace(&bw_trace, A_surfxml_link_bandwidth_file);
-  surf_parse_get_trace(&lat_trace, A_surfxml_link_latency_file);
-  surf_parse_get_trace(&state_trace, A_surfxml_link_state_file);
-
-  if (bw_trace)
-    INFO0("The GTNetS network model doesn't support bandwidth state traces");
-  if (lat_trace)
-    INFO0("The GTNetS network model doesn't support latency state traces");
-  if (state_trace)
-    INFO0("The GTNetS network model doesn't support link state traces");
-
-  current_property_set = xbt_dict_new();
-  link_new(name, bw, lat, current_property_set);
-}
+  XBT_DEBUG("link_gtnets");
 
-/* Parses a route from the XML: UNMODIFIED BY HC */
-static void parse_route_set_endpoints(void)
-{
-  src_id = network_card_new(A_surfxml_route_src);
-  dst_id = network_card_new(A_surfxml_route_dst);
-  route_action = A_surfxml_route_action;
-}
+  if (link->bandwidth_trace)
+    XBT_INFO
+        ("The GTNetS network model doesn't support bandwidth state traces");
+  if (link->latency_trace)
+    XBT_INFO("The GTNetS network model doesn't support latency state traces");
+  if (link->state_trace)
+    XBT_INFO("The GTNetS network model doesn't support link state traces");
 
-/* KF*/
-static void parse_route_set_routers(void)
-{
-  int id = network_card_new(A_surfxml_router_id);
+  if (link->policy == SURF_LINK_FULLDUPLEX)
+  {
+    link_new(bprintf("%s_UP",link->id), link->bandwidth, link->latency, current_property_set);
+    link_new(bprintf("%s_DOWN",link->id), link->bandwidth, link->latency, current_property_set);
 
-  /* KF: Create the GTNets router */
-  if (gtnets_add_router(id)) {
-    xbt_assert0(0, "Cannot add GTNetS router");
   }
+  else  link_new(link->id, link->bandwidth, link->latency, current_property_set);
+  current_property_set = NULL;
 }
 
-/* Create the route (more than one hops): MODIFIED BY KF */
-static void parse_route_set_route(void)
+/* Create the gtnets topology based on routing strategy */
+static void create_gtnets_topology(void)
 {
-  char *name;
-  if (src_id != -1 && dst_id != -1) {
-    name = bprintf("%x#%x", src_id, dst_id);
-    manage_route(route_table, name, route_action, 0);
-    free(name);
-  }
-}
-
-static void add_route()
-{
-  xbt_ex_t e;
-  unsigned int cpt = 0;
-  int link_list_capacity = 0;
-  int nb_link = 0;
-  xbt_dict_cursor_t cursor = NULL;
-  char *key, *data, *end;
-  const char *sep = "#";
-  xbt_dynar_t links, keys;
-  static network_link_GTNETS_t *link_list = NULL;
-
-
-  XBT_IN;
-  xbt_dict_foreach(route_table, cursor, key, data) {
-    char *link = NULL;
-    nb_link = 0;
-    links = (xbt_dynar_t) data;
-    keys = xbt_str_split_str(key, sep);
-
-    link_list_capacity = xbt_dynar_length(links);
-    link_list = xbt_new(network_link_GTNETS_t, link_list_capacity);
-
-    src_id = strtol(xbt_dynar_get_as(keys, 0, char *), &end, 16);
-    dst_id = strtol(xbt_dynar_get_as(keys, 1, char *), &end, 16);
-    xbt_dynar_free(&keys);
-
-    xbt_dynar_foreach(links, cpt, link) {
-      TRY {
-        link_list[nb_link++] = xbt_dict_get(link_set, link);
-      }
-      CATCH(e) {
-        RETHROW1("Link %s not found (dict raised this exception: %s)", link);
-      }
-    }
-    if (nb_link == 1)
-      route_onehop_new(src_id, dst_id, link_list, nb_link);
-  }
-
-  xbt_dict_foreach(route_table, cursor, key, data) {
-    char *link = NULL;
-    nb_link = 0;
-    links = (xbt_dynar_t) data;
-    keys = xbt_str_split_str(key, sep);
-
-    link_list_capacity = xbt_dynar_length(links);
-    link_list = xbt_new(network_link_GTNETS_t, link_list_capacity);
-
-    src_id = strtol(xbt_dynar_get_as(keys, 0, char *), &end, 16);
-    dst_id = strtol(xbt_dynar_get_as(keys, 1, char *), &end, 16);
-    xbt_dynar_free(&keys);
-
-    xbt_dynar_foreach(links, cpt, link) {
-      TRY {
-        link_list[nb_link++] = xbt_dict_get(link_set, link);
-      }
-      CATCH(e) {
-        RETHROW1("Link %s not found (dict raised this exception: %s)", link);
-      }
-    }
-    if (nb_link >= 1)
-      route_new(src_id, dst_id, link_list, nb_link);
-  }
-
-  xbt_dict_free(&route_table);
-  gtnets_print_topology();
-  XBT_OUT;
+   XBT_DEBUG("Starting topology generation");
+// FIXME: We should take the list of hosts/routers (in the routing module), number the elements of this list,
+//   and then you can use the id to reimplement properly the following GTNets calls
+
+   //get the onelinks from the parsed platform
+   xbt_dynar_t onelink_routes = routing_platf->get_onelink_routes();
+   if (!onelink_routes)
+     return;
+
+   //save them in trace file
+   onelink_t onelink;
+   unsigned int iter;
+   xbt_dynar_foreach(onelink_routes, iter, onelink) {
+     void *link = onelink->link_ptr;
+
+     if(onelink->src->id != onelink->dst->id){
+     XBT_DEBUG("Link (#%p), src (#%s), dst (#%s), src_id = %d, dst_id = %d",
+         link,
+         onelink->src->name,
+         onelink->dst->name,
+         onelink->src->id,
+         onelink->dst->id);
+     XBT_DEBUG("Calling one link route");
+        if(onelink->src->rc_type == SURF_NETWORK_ELEMENT_ROUTER){
+          gtnets_add_router(onelink->src->id);
+        }
+        if(onelink->dst->rc_type == SURF_NETWORK_ELEMENT_ROUTER){
+         gtnets_add_router(onelink->dst->id);
+        }
+        route_onehop_new(onelink->src->id, onelink->dst->id, (network_link_GTNETS_t)(link));
+     }
+   }
+
+   if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
+        gtnets_print_topology();
+   }
 }
 
 /* Main XML parsing */
-static void define_callbacks(const char *file)
-{
-  surfxml_add_callback(STag_surfxml_router_cb_list, &parse_route_set_routers);
-  surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
-  surfxml_add_callback(STag_surfxml_route_cb_list,
-                       &parse_route_set_endpoints);
-  surfxml_add_callback(ETag_surfxml_route_cb_list, &parse_route_set_route);
-  surfxml_add_callback(ETag_surfxml_platform_cb_list, &add_route);
-}
-
-static const char *get_resource_name(void *resource_id)
+static void define_callbacks(void)
 {
-  return ((network_card_GTNETS_t) resource_id)->name;
+  /* Figuring out the network links */
+  sg_platf_link_add_cb (&parse_link_init);
+  sg_platf_postparse_add_cb(&create_gtnets_topology);
 }
 
-static xbt_dict_t get_properties(void *link)
-{
-  return ((network_card_GTNETS_t) link)->properties;
-}
-
-
-/* We do not care about this: only used for traces */
 static int resource_used(void *resource_id)
 {
-  return 0;                     /* We don't care */
+  xbt_die("The resource_used feature is not implemented in GTNets model");
 }
 
-static int action_free(surf_action_t action)
+static int action_unref(surf_action_t action)
 {
   action->refcount--;
   if (!action->refcount) {
     xbt_swag_remove(action, action->state_set);
-    /* KF: No explicit freeing needed for GTNeTS here */
-    free(action);
+#ifdef HAVE_TRACING
+    xbt_free(action->category);
+#endif
+    surf_action_free(&action);
     return 1;
   }
   return 0;
 }
 
-static void action_use(surf_action_t action)
-{
-  action->refcount++;
-}
-
 static void action_cancel(surf_action_t action)
 {
-  xbt_assert0(0, "Cannot cancel GTNetS flow");
+  xbt_die("Cannot cancel GTNetS flow");
   return;
 }
 
 static void action_recycle(surf_action_t action)
 {
-  xbt_assert0(0, "Cannot recycle GTNetS flow");
+  xbt_die("Cannot recycle GTNetS flow");
   return;
 }
 
-static void action_change_state(surf_action_t action,
-                                e_surf_action_state_t state)
+static double action_get_remains(surf_action_t action)
 {
-/*   if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
-/*     if(((surf_action_network_GTNETS_t)action)->variable) { */
-/*       lmm_variable_disable(maxmin_system, ((surf_action_network_GTNETS_t)action)->variable); */
-/*       ((surf_action_network_GTNETS_t)action)->variable = NULL; */
-/*     } */
-
-  surf_action_change_state(action, state);
-  return;
+  return action->remains;
 }
 
+static void action_state_set(surf_action_t action,
+                             e_surf_action_state_t state)
+{
+  surf_action_state_set(action, state);
+}
 
-/* share_resources() */
 static double share_resources(double now)
 {
   xbt_swag_t running_actions =
-    surf_network_model->common_public.states.running_action_set;
+      surf_network_model->states.running_action_set;
 
   //get the first relevant value from the running_actions list
   if (!xbt_swag_size(running_actions))
     return -1.0;
 
-  xbt_assert0(time_to_next_flow_completion,
+  xbt_assert(time_to_next_flow_completion,
               "Time to next flow completion not initialized!\n");
 
+  XBT_DEBUG("Calling gtnets_get_time_to_next_flow_completion");
   time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
+  XBT_DEBUG("gtnets_get_time_to_next_flow_completion received %lg",
+         time_to_next_flow_completion);
 
   return time_to_next_flow_completion;
 }
 
-/* delta: by how many time units the simulation must advance */
-/* In this function: change the state of actions that terminate */
-/* The delta may not come from the network, and thus may be different (smaller)
-   than the one returned by the function above */
-/* If the delta is a network-caused min, then do not emulate any timer in the
-   network simulation, otherwise fake a timer somehow to advance the simulation of min seconds */
-
 static void update_actions_state(double now, double delta)
 {
   surf_action_network_GTNETS_t action = NULL;
-  //  surf_action_network_GTNETS_t next_action = NULL;
   xbt_swag_t running_actions =
-    surf_network_model->common_public.states.running_action_set;
+      surf_network_model->states.running_action_set;
 
-  /* If there are no renning flows, just return */
+  /* If there are no running flows, just return */
   if (time_to_next_flow_completion < 0.0) {
     return;
   }
 
-  /*KF: if delta == time_to_next_flow_completion, too. */
+  /* if delta == time_to_next_flow_completion, too. */
   if (time_to_next_flow_completion <= delta) {  /* run until the first flow completes */
     void **metadata;
     int i, num_flows;
@@ -414,94 +235,142 @@ static void update_actions_state(double now, double delta)
     num_flows = 0;
 
     if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
-      xbt_assert0(0,
-                  "Cannot run GTNetS simulation until next flow completion");
+      xbt_die("Cannot run GTNetS simulation until next flow completion");
     }
     if (num_flows < 1) {
-      xbt_assert0(0,
-                  "GTNetS simulation couldn't find a flow that would complete");
+      xbt_die("GTNetS simulation couldn't find a flow that would complete");
     }
 
     xbt_swag_foreach(action, running_actions) {
-      DEBUG2("Action (%p) remains old value: %f", action,
+      XBT_DEBUG("Action (%p) remains old value: %f", action,
              action->generic_action.remains);
-      double remain = gtnets_get_flow_rx(action);
-      DEBUG1("Remain value returned by GTNetS : %f", remain);
-      //need to trust this remain value
-      if (remain == 0) {
-        action->generic_action.remains = 0;
+      double sent = gtnets_get_flow_rx(action);
+
+      XBT_DEBUG("Sent value returned by GTNetS : %f", sent);
+
+#ifdef HAVE_TRACING
+      action->last_remains = action->generic_action.remains;
+#endif
+
+     //need to trust this remain value
+     if (sent == 0) {
+       action->generic_action.remains = 0;
       } else {
-        action->generic_action.remains = action->generic_action.cost - remain;
+        action->generic_action.remains =
+            action->generic_action.cost - sent;
       }
-      DEBUG2("Action (%p) remains new value: %f", action,
+
+     // verify that this action is a finishing action.
+     int found=0;
+     for (i = 0; i < num_flows; i++) {
+       if(action == (surf_action_network_GTNETS_t) (metadata[i])){
+           found = 1;
+           break;
+       }
+     }
+
+     // indeed this action have not yet started
+     // because of that we need to fix the remaining to the
+     // original total cost
+     if(found != 1 && action->generic_action.remains == 0 ){
+         action->generic_action.remains = action->generic_action.cost;
+     }
+
+     XBT_DEBUG("Action (%p) remains new value: %f", action,
              action->generic_action.remains);
+
+#ifdef HAVE_TRACING
+      if (TRACE_is_enabled()) {
+        double last_amount_sent = (action->generic_action.cost - action->last_remains);
+        double amount_sent = (action->generic_action.cost - action->generic_action.remains);
+
+        // tracing resource utilization
+        xbt_dynar_t route = NULL;
+
+        routing_get_route_and_latency (action->src, action->dst, &route, NULL);
+
+        unsigned int i;
+        for (i = 0; i < xbt_dynar_length (route); i++){
+          network_link_GTNETS_t *link = ((network_link_GTNETS_t*)xbt_dynar_get_ptr (route, i));
+          TRACE_surf_link_set_utilization ((*link)->generic_resource.name,
+                                            ((surf_action_t) action)->category,
+                                            (amount_sent - last_amount_sent)/(delta),
+                                            now-delta,
+                                            delta);
+      }
+      }
+#endif
+
+
     }
 
     for (i = 0; i < num_flows; i++) {
       action = (surf_action_network_GTNETS_t) (metadata[i]);
 
+
+
       action->generic_action.finish = now + time_to_next_flow_completion;
-      action_change_state((surf_action_t) action, SURF_ACTION_DONE);
-      DEBUG1("----> Action (%p) just terminated", action);
+      action_state_set((surf_action_t) action, SURF_ACTION_DONE);
+      XBT_DEBUG("----> Action (%p) just terminated", action);
+
     }
 
 
   } else {                      /* run for a given number of seconds */
     if (gtnets_run(delta)) {
-      xbt_assert0(0, "Cannot run GTNetS simulation");
+      xbt_die("Cannot run GTNetS simulation");
     }
   }
 
   return;
 }
 
-/* UNUSED HERE: no traces */
 static void update_resource_state(void *id,
                                   tmgr_trace_event_t event_type,
                                   double value, double date)
 {
-  xbt_assert0(0, "Cannot update model state for GTNetS simulation");
-  return;
+  xbt_die("Cannot update model state for GTNetS simulation");
 }
 
-/* KF: Rate not supported */
-static surf_action_t communicate(void *src, void *dst, double size,
-                                 double rate)
+/* Max durations are not supported */
+static surf_action_t communicate(sg_routing_edge_t src_card,
+                                 sg_routing_edge_t dst_card,
+                                 double size, double rate)
 {
   surf_action_network_GTNETS_t action = NULL;
-  network_card_GTNETS_t card_src = src;
-  network_card_GTNETS_t card_dst = dst;
-/*
-  int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
-  network_link_GTNETS_t *route = ROUTE(card_src->id, card_dst->id);
-*/
-
-/*
-  xbt_assert2(route_size,"You're trying to send data from %s to %s but there is no connexion between these two cards.", card_src->name, card_dst->name);
-*/
-
-  action = xbt_new0(s_surf_action_network_GTNETS_t, 1);
-
-  action->generic_action.refcount = 1;
-  action->generic_action.cost = size;
-  action->generic_action.remains = size;
-  /* Max durations are not supported */
-  action->generic_action.max_duration = NO_MAX_DURATION;
-  action->generic_action.start = surf_get_clock();
-  action->generic_action.finish = -1.0;
-  action->generic_action.model_type = surf_network_model;
-
-  action->generic_action.state_set =
-    surf_network_model->common_public.states.running_action_set;
-
-  xbt_swag_insert(action, action->generic_action.state_set);
-
-  /* KF: Add a flow to the GTNets Simulation, associated to this action */
-  if (gtnets_create_flow(card_src->id, card_dst->id, size, (void *) action)
-      < 0) {
-    xbt_assert2(0, "Not route between host %s and host %s", card_src->name,
-                card_dst->name);
+
+  int src = src_card->id;
+  int dst = dst_card->id;
+  char *src_name = src_card->name;
+  char *dst_name = dst_card->name;
+
+  xbt_assert((src >= 0
+               && dst >= 0), "Either src or dst have invalid id (id<0)");
+
+  XBT_DEBUG("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst,
+         dst_name);
+
+  xbt_dynar_t route = NULL;
+
+  routing_get_route_and_latency(src_card, dst_card, &route, NULL);
+
+  route_new(src, dst, route, xbt_dynar_length(route));
+
+  action =
+      surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size,
+                      surf_network_model, 0);
+
+#ifdef HAVE_TRACING
+  action->last_remains = 0;
+#endif
+
+  /* Add a flow to the GTNets Simulation, associated to this action */
+  if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
+    xbt_die("Not route between host %s and host %s", src_name, dst_name);
   }
+#ifdef HAVE_TRACING
+  TRACE_surf_gtnets_communicate(action, src_card, dst_card);
+#endif
 
   return (surf_action_t) action;
 }
@@ -509,15 +378,13 @@ static surf_action_t communicate(void *src, void *dst, double size,
 /* Suspend a flow() */
 static void action_suspend(surf_action_t action)
 {
-  xbt_assert0(0,
-              "action_suspend() not supported for the GTNets network model");
+  THROW_UNIMPLEMENTED;
 }
 
 /* Resume a flow() */
 static void action_resume(surf_action_t action)
 {
-  xbt_assert0(0,
-              "action_resume() not supported for the GTNets network model");
+  THROW_UNIMPLEMENTED;
 }
 
 /* Test whether a flow is suspended */
@@ -526,72 +393,76 @@ static int action_is_suspended(surf_action_t action)
   return 0;
 }
 
-static void finalize(void)
+#ifdef HAVE_TRACING
+static void gtnets_action_set_category(surf_action_t action, const char *category)
 {
-  xbt_dict_free(&link_set);
-
-  surf_model_exit(surf_network_model);
-
-  free(surf_network_model);
-  surf_network_model = NULL;
+  action->category = xbt_strdup (category);
+}
+#endif
 
+static void finalize(void)
+{
   gtnets_finalize();
 }
 
 static void surf_network_model_init_internal(void)
 {
-  s_surf_action_t action;
+  surf_network_model = surf_model_init();
 
-  surf_network_model = xbt_new0(s_surf_network_model_t, 1);
-
-  surf_model_init(surf_network_model);
-
-  surf_network_model->common_public.name_service = name_service;
-  surf_network_model->common_public.get_resource_name = get_resource_name;
-  surf_network_model->common_public.action_get_state = surf_action_get_state;
-  surf_network_model->common_public.action_use = action_use;
-  surf_network_model->common_public.action_free = action_free;
-  surf_network_model->common_public.action_cancel = action_cancel;
-  surf_network_model->common_public.action_recycle = action_recycle;
-  surf_network_model->common_public.action_change_state = action_change_state;
-  surf_network_model->common_public.action_set_data = surf_action_set_data;
-  surf_network_model->common_public.name = "network";
+  surf_network_model->name = "network GTNetS";
+  surf_network_model->action_unref = action_unref;
+  surf_network_model->action_cancel = action_cancel;
+  surf_network_model->action_recycle = action_recycle;
+  surf_network_model->action_state_set = action_state_set;
+  surf_network_model->get_remains = action_get_remains;
 
   surf_network_model->model_private->resource_used = resource_used;
   surf_network_model->model_private->share_resources = share_resources;
   surf_network_model->model_private->update_actions_state =
-    update_actions_state;
+      update_actions_state;
   surf_network_model->model_private->update_resource_state =
-    update_resource_state;
+      update_resource_state;
   surf_network_model->model_private->finalize = finalize;
 
-  surf_network_model->common_public.suspend = action_suspend;
-  surf_network_model->common_public.resume = action_resume;
-  surf_network_model->common_public.is_suspended = action_is_suspended;
+  surf_network_model->suspend = action_suspend;
+  surf_network_model->resume = action_resume;
+  surf_network_model->is_suspended = action_is_suspended;
+#ifdef HAVE_TRACING
+  surf_network_model->set_category = gtnets_action_set_category;
+#endif
 
   surf_network_model->extension.network.communicate = communicate;
 
-  /*for the props of the link */
-  surf_network_model->common_public.get_properties = get_properties;
+  /* Added the initialization for GTNetS interface */
+  if (gtnets_initialize(sg_tcp_gamma)) {
+    xbt_die("Impossible to initialize GTNetS interface");
+  }
 
-  link_set = xbt_dict_new();
+  routing_model_create(NULL);
+}
 
-  /* KF: Added the initialization for GTNetS interface */
-  if (gtnets_initialize()) {
-    xbt_assert0(0, "impossible to initialize GTNetS interface");
-  }
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+static int get_latency_limited(surf_action_t action)
+{
+  return 0;
 }
+#endif
 
-#ifdef HAVE_GTNETS
-void surf_network_model_init_GTNETS(const char *filename)
+void surf_network_model_init_GTNETS(void)
 {
   if (surf_network_model)
     return;
+
   surf_network_model_init_internal();
-  define_callbacks(filename);
+  define_callbacks();
   xbt_dynar_push(model_list, &surf_network_model);
 
-  update_model_description(surf_network_model_description,
-                           "GTNets", surf_network_model);
-}
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+  surf_network_model->get_latency_limited = get_latency_limited;
 #endif
+
+  if (sg_gtnets_jitter > 0.0) {
+    gtnets_set_jitter(sg_gtnets_jitter);
+    gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
+  }
+}